SAGGE, Roberto Jr.; REYES, Lemar P. Delos. Development of Flexible Learning Instruction Through Progressive, Personalized, Engaging and Diversified (FLIPPED) Video Media in Mathematics. International Journal of Multidisciplinary: Applied Business and Education Research, Malang, Indonesia, v. 5, n. 12, p. 5318–5327, 2024. DOI: 10.11594/ijmaber.05.12.27. Disponível em: https://ijmaberjournal.org/index.php/ijmaber/article/view/1918. Acesso em: 12 jun. 2026.